The enclosure includes an I/O mounting rack, a power supply, and a 24 VDC loop power supply, already wired. You add the I/O processor and the SNAP input and output (I/O) modules needed for your application.

The SNAP-IT-WM4 is a sturdy NEMA 4/4x/6 polycarbonate industrial enclosure that holds one processor and up to four I/O modules. The SNAP-IT-WM4 has a transparent cover. It is a handy size for small areas and mounts on any wall.

For the I/O processor, add either a SNAP PAC R-series controller or a SNAP PAC Ethernet brain. Choose the controller if you need programming capability; download the free PAC Project Basic software to program it. If you don't need progammability, choose the Ethernet-based brain, which provides local intelligence and can be used with a SNAP PAC controller, with an Allen-Bradley PLC or Modbus/TCP system, or for PC-based control.

NOTE: If you're using a Wired+Wireless I/O processor with this enclosure, purchase a 90-degree right-angle bracket adapter for the antenna. Wired+Wireless models include SNAP-PAC-R1-W, SNAP-PAC-R2-W, SNAP-PAC-EB1-W, and SNAP-PAC-EB2-W.

For I/O modules, choose from our complete line of SNAP analog, digital, and serial modules. Each module contains one to 32 points, and a wide variety of signal types is available.

If you need an enclosure for panel mounting or outdoor use, see the 12-module SNAP-IT-PM12.
For a rack-mounted or desktop enclosure, see the 16-module SNAP-IT-RM16.

120 VAC United States,
240 VAC United Kingdom, or
240 VAC International

n/a

n/a

LED indicators2

On front panel, 64 LEDs
indicate point status for 4-channel digital
I/O modules; brain or controller LEDs are also visible on front.

Status LEDs on I/O and
status/communication LEDs on brain or controller are not visible outside
the enclosure.

Status LEDs on I/O and
status/communication LEDs on brain or controller are visible through
transparent cover.

Operating temperature3

0° to 70° C
(32 to 158° F)

0° to 70° C
(32 to 158° F)

–40 to 80°C
(–40 to 176° F)

Storage temperature3

–30° to 85°
C (–22 to 185° F)

–30° to 85°
C (–22 to 185° F)

–40 to 80 °C
(–40 to 176° F)

Humidity

0–95% humidity,
non-condensing

0–95% humidity,
non-condens­ing

0–95% humidity,
non-condensing

Warranty

30 months

30 months

30 months

1
NEMA 3 or NEMA 4 is recommended for exterior use.2 See I/O, brain, or controller data sheets for
details on LEDs.3 Operating and storage temperatures listed are
for the enclosure only. Temperature limitations for the processor and
I/O you install inside the enclosure are more limiting. See the processor’s
and I/O modules’ data sheets for their specifications.

SNAP PAC System enclosures make it easy to install Opto 22 I/O where you need it. With a choice of rack, panel, and wall mounting, these enclosures provide convenience and protection for your processor and I/O.

Each enclosure includes an I/O mounting rack and a power supply, already wired. You add the I/O processor and the SNAP input and output (I/O) modules needed for your application.

This document is a statement of compliance with the EU Directive 2011/65/EU,
Restriction of Hazardous Substances (RoHS 2). This document lists Opto 22 products that comply with the substance restrictions of the RoHS2 directive.